Changing name, need help finding middle name

Joined this site in 2010 and am finally using the account...

I am changing my name this summer. I start college in the fall and think it is a good time for it. My first name does not fit me and I have never liked it. My new first name will be Isaac, currently my middle name. Yitzhak is also my Hebrew name. My surname is long and German.

For my middle name I want something related to space. I have always been fascinated with space and wanted to be an astronaut when I was little. Because my health will prevent me from ever being an astronaut, I am going into astronautic engineering instead.

Mother of three teenagers: (1) Daniel Glen, (2) Timothy Austin, and (3) Rebecca Jane. All middle names honor family, with Jane used three generations in a row. (A second girl would have been Susanna Eve).

Hubble - after EdwinHubble, a pretty cool astronomer, also after the Hubble Space TelescopeSirius - the brightest star in the night skyGalileo, Newton, Kepler, Tycho, Herschel, Copernicus - pick your favourite astronomerMars - the next frontier
Cosmos - after the cosmos, and CarlSagan's book/TV seriesEagle - the Apollo 11 module that landed on the moon
Polaris - the NorthStarEnterprise - the starship (also the first Space Shuttle orbiter)Pluto - an homage to the demoted planet
Kuiper - the Kuiper belt
Voyager - after Voyager 1, the farthest human-made object from Earth and first to exit the Solar System